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Tue, 6 Oct 2026 21:13:26 GMT Received: from smtprelay04.dal12v.mail.ibm.com ([172.16.1.6]) by ppma23.wdc07v.mail.ibm.com (PPS) with ESMTPS id 4h3dhgus1h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 06 Oct 2026 21:13:26 +0000 (GMT) Received: from smtpav04.dal12v.mail.ibm.com (smtpav04.dal12v.mail.ibm.com [10.241.53.103]) by smtprelay04.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 696LDPXe9831120 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 6 Oct 2026 21:13:25 GMT Received: from smtpav04.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3C3495805E; Tue, 6 Oct 2026 21:13:25 +0000 (GMT) Received: from smtpav04.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7267258052; Tue, 6 Oct 2026 21:13:24 +0000 (GMT) Received: from [9.61.251.167] (unknown [9.61.251.167]) by smtpav04.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 6 Oct 2026 21:13:24 +0000 (GMT) Message-ID: Date: Tue, 6 Oct 2026 14:13:24 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v12 16/17] s390x/pci: Implement migration for emulated devices To: Konstantin Shkolnyy , mjrosato@linux.ibm.com Cc: farman@linux.ibm.com, richard.henderson@linaro.org, iii@linux.ibm.com, david@kernel.org, cohuck@redhat.com, pasic@linux.ibm.com, borntraeger@linux.ibm.com, qemu-s390x@nongnu.org, qemu-devel@nongnu.org References: <20261006001643.420929-1-kshk@linux.ibm.com> <20261006001643.420929-17-kshk@linux.ibm.com> Content-Language: en-US From: Farhan Ali In-Reply-To: <20261006001643.420929-17-kshk@linux.ibm.com> Content-Type: text/plain; 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envelope-from=alifm@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 10/5/2026 5:16 PM, Konstantin Shkolnyy wrote: > Implement zPCI device state migration, consequently enabling migration > of VMs that have emulated PCI devices, whether virtio or not. > Migration is allowed for devices whose function handle has the > FH_SHM_EMUL bit set. For these devices QEMU will save and restore the > state of its zPCI emulator. > > This will enable emulated PCI migration starting with s390-ccw-virtio-11.2. > > Passthrough devices will continue to block migration. > > Signed-off-by: Konstantin Shkolnyy > --- > hw/s390x/s390-pci-bus.c | 346 ++++++++++++++++++++++++++++++- > hw/s390x/s390-pci-inst.c | 2 +- > hw/s390x/s390-virtio-ccw.c | 4 + > include/hw/s390x/s390-pci-bus.h | 9 +- > include/hw/s390x/s390-pci-inst.h | 1 + > 5 files changed, 353 insertions(+), 9 deletions(-) Reviewed-by: Farhan Ali